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Direct message the job poster from Intec SelectSenior UI Engineer - £120,000 – On-site (Central London)OverviewWe are hiring a

Senior UI Engineer

to join a high-performance technology team within a leading financial services organisation operating in the oil and energy derivatives space. The business runs a cutting-edge electronic trading platform that serves both internal trading teams and external clients, offering low-latency, highly reliable trading access via a modern UI.We are looking for a self-starter who takes ownership of technical challenges and delivers robust solutions, with the ability to work under pressure in a fast-moving trading environment. You must also be a collaborative team player who communicates clearly and contributes to a high-quality engineering culture.Key ResponsibilitiesDesign, build, and maintain a React/TypeScript trading UI, delivering real-time streaming data and a seamless user experienceIntegrate the UI with RESTful and streaming APIs (built in Rust and Python)Own performance improvements across dashboards, widgets, and live data visualisationCollaborate with QA and DevOps to enhance automated testing and deployment pipelinesLead efforts in securing, scaling, and monitoring the frontend environmentUse observability tools (Prometheus, Grafana, Loki) to monitor UI health and performanceDrive UI architectural decisions, performance benchmarking, and best practice implementationSkills and Experience Required5+ years of experience in frontend/UI engineering, with a focus on performance and scaleStrong understanding of WebSocket integration, low-latency data streaming, and threadingExperience troubleshooting data-heavy UIs and optimising load timesFamiliarity with tools like Redis, Kafka, and cloud platforms such as Azure or AWSProficient in Git and modern source control workflowsKnowledge of performance diagnostics (e.g. Google PageSpeed Insights) and responsive UI optimisationExperience working with real-time trading or data visualisation platformsNice to HaveExperience deploying apps to the Apple App StoreKnowledge of web security best practices and cyber threat mitigationFamiliarity with microservices and REST API architectureExposure to Infrastructure as Code tools (e.g. Terraform)Package:Up to £120,000Up to 20% bonusOn-site (Central London)Seniority level

Seniority level Mid-Senior levelEmployment type

Employment type Full-timeJob function

Job function Information TechnologyIndustries Financial Services, Oil and Gas, and Investment BankingReferrals increase your chances of interviewing at Intec Select by 2xGet notified about new User Interface Engineer jobs in

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